磺化碱木素与甲基丙烯酸接枝共聚物制备研究  

Study on preparation of sulfonated alkali lignin and methacrylic acid graft copolymer

作　　者：袁海晨 郭艳玲[2] 王国房[3] 张冉冉 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津300457 [2]天津科技大学理学院,天津300457 [3]煤炭科学研究总院,北京100013

出　　处：《煤炭科学技术》2015年第4期141-144,共4页Coal Science and Technology

基　　金：煤炭科学研究总院技术创新基金资助项目(2010CX01)

摘　　要：以自制的木质素磺酸钠(LA)为基体,过硫酸钾(K2S2O8)为引发剂,与甲基丙烯酸(MAA)进行聚合制备甲基丙烯酸接枝木质素磺酸钠的共聚物。利用红外光谱、热重分析等对磺化碱木素与磺化碱木素MAA接枝共聚物进行结构表征,并考察了合成条件对水煤浆分散效果的影响。结果表明:接枝的最佳方案为温度75℃,m(MAA)︰m(LA)︰m(H2O)=1︰3︰150,K2S2O8的质量分数为4%(相对于LA)。将该分散剂用于神华煤成浆试验,证明了该分散剂具有较好的分散作用。Based on self made sodium lignosulfonate,potassium persulfate( K2S2O8) as initiator with methacrylic acid could polymerize and prepare methacrylic acid graft and sodium lignosulfonate copolymer. The Infrared Spectrum and thermogravimetric analysis were applied to the structure characterization on the lignosulfonate and lignosulfonate MAA graft copolymer and to investigate the synthesis conditions affected to the dispersion effect of the coal water mixture. The results showed that the best plan of graft was a temperature of 75 ℃,m( MAA) ︰ m( LA) ︰ m( H2O) = 1 ︰ 3 ︰ 150,and the quality fraction of K2S2O8 was 4%( relative to LA). The dispersant was applied to the Shenhua coal slurry test and the dispersant was verified with good dispersion role.

关 键 词：木质素磺酸钠 甲基丙烯酸 接枝共聚物 水煤浆 

分 类 号：TQ316.343[化学工程—高聚物工业]